Clutch mechanism for gang-plow lifters.



F. J. BRADBERRY.

CLUTCH MLGHANISM POR GANG PLOW LIFTLRS.

@mp4 I FREDERICK J'. BRADBERRY, OE MITCHELL, ASOUTI-I DAKOTA.

CLICH MEGHANISM FOR GANG-PLOW LIFTERS.

Specification of Lettersfatent. Patented Jun@ 11:, 19.12, Application tiled April 23, 1911 erial No. 623,373.

To. allfwhom 'it may cov/acera:

lie it known that Llfknnnincn: J. Belin nenni', a citizen of the United' States, and a resident of Mitchell, in the county of Davison and State of South Dakota, have invented a new and useful Clutch Mechanism for Gang-Plow Lifters, of which thel fol lowing is a specification.

This invention relates to clutch mechanism for lifting and. releasing gang plows and its object is to provide means whereby the engineer of the traction engine may control the plow lifting means and the plow releasing means without leaving the tractor.

ln the accompanying drawings, Figure 1 is-an elevation of the gangv plow and a diagrammatic View of a tractor. Fig. 2 is a view partly in elevation and partly in section of the mechanism mounted and 5 are sections on the lines 4-4 and 5-5 of Fig. 3, respectively. Similar reference characters refer to like parts throughout the several views.

ln the use of gang plowsdrawn by steam or gasolene motors, an engineer is required yao to operate the tractor and a second operator to controlv the plows. The present construction is designed to avoid the necessity of having a plow operator, the plowing being controlled by the engineer of the tractor.

The plow platform, the operating levers, the self-castering gage wheels, and the construction of the tractor form no part of my present invention which is applicable to m'any designs of motor drawn gang plows. lhe tractor 1 may be provided with any proper mechanism to drive the bevel gear 2, that shownbein a main gear 3 connected to a driving shaft of the tractor, a pinion 4 meshing therewith and secured to the shaft 5, which shaft is mounted in bearings 6,7 carried by anyy desired portion of the tractor. ln the drawings, this support is shown to be ,the main floor or platform of the tractor, On the smit 5 is secured a bevel gear 7 which mesi-"fis with the bevel gear 2, which may there4 ore be considered as constantly running. This bevel gear 2 is preferably provided with a long sleeve 8 having clutch jaws 9, the sleeve being journaled in the bearing 10, furnishes a bearing vfor the front end of the shaft 1'1. This yshaft is also journaled and slidable in the bearing 12. Secured to the front end of this shaft is a clutch memf sleeve.

on the trac` tor. Fig. 3 is a plan of the same. Figs.4'

ber 14 adapted to engage the jaws 9 on the A lever 15 is mounted on thel edestal 16 and has a Harige 17, provided with an aperture to receivethe shaft 11, and extending between the clutch member 14 and the shoulder 18 on the shaft 11. The lever is formed with an inclined edge 19 which is adapted to engage the pin 2G on the pedes* tal. A. spring, 21 between the flange 17 and the bearing l2 normally tendsto force they shaft forward4 and the clutch members into engagement; When the shaft ispulled to the. rear, the inclined edge; 19. willy ride upon the in 20 until` the lever reachesthepoown in dottedlines'in Fig; 3, when' sition it will fall back of this pin and hold the. jaws from engaging.y By liftin this lever the sprin vis permitted to force onward the shaft an clutch member 14. Secured to the shaft 11 are also they pinion 23, the disk 24, the brake drum 25 andthe forward member 26.0f a universal coupling. Mounted in bearings 27- is a shaft 28 carrying a gear 29 having a cam 30 mounted on it. The oiflce of these members will be -explained later on.

The gang-plow construct-ion forms no part of this invention and is shown iii' the' drawings as having a platform 31 supported at its front end by a wheel 44 at the lower end of a post 45. Between the tractor vand plow platform are any desired flexible con.

nectors 88, and between the'universal coupling members 2,6 and 37 is an adjustable shaft, one member 39 of which is an angular sleeve in which is s'lidable the other member 40. The sleeve carries another member 41 of a universal coupling while a fourth member 42 is mounted on the' rear end of the shaft 4.

0n the line 9-9 of Fig. 2, the two parts 39 and 40,will be square in cross section.

When it is desired to turn the shaft 30, they operator releases the lever 15 by kicking it up over the pin 2O and thus permitting the spring 2l to force the clutch member 14 into engagement with the jaws 9 on the sleeve-8 of the constantly running gear 2. The shaft 11 then revolves, turning the sleeve39, and rod 40. 'Ehe turning of the shaft 11 drives the gear 29. 'When the predetermined amount of revolution of the shaft 39 has been completed the cam 30 engages the disk .24 and moves it from the position shown by the solid lines to that in dotted lines in Fig.

3, sliding back the shaft 11 until the clutch member 14 disengages the jaws 9. ThisV movement carries b'aek the lever 15 to the revolubly'moniited thereon,`a revolving gear loosely mounted on the end'thereof and havingjaws on the inner end of-its hub, a sleeve vSecured to said Shaft andihaving jaws adapted to engage the jaws on the gear, a' spring to force the jaws into engagement, a pinion and a disk secured to said-shaft, a gear rev- .olubly mounted adjacent. the disk and in' mesh with the pinionand having a cam o-n its side whereby the disk may `he engaged andthe shaftmoved longitudinally to disen gage said jaws, and means to look said shaft and the jaws on the sleeve in inoperative position. I

1. The oombination of a frame, a shaft 2. The combination of a platform, a bearing thereon, a driving gear and a hollow hub therefor revoluble in said bearing, said hub having clutch-j awson its inner end, a Second bearing, a shaft revoluble and slidable in said bearing and in said hub,- a `sleeve s ecured to said shaft and provided with clutch-jaws to engage those on said hub, a spring to force said jaws into engagement, a disk and a pinion-secured to t-he shaft, a gear revolubly mounted in mesh with'said pinion, a cam on said gear adapted to Aengage the disk and longitudinally move theshaft to disengage the clutohejaws, and a locking'device connected to said shaft to hold the cluteh-jawslon the sleeve out of engagement with the jaws on the hub. A

In testimony whereof I have signed this specification in the presence of two subscribing witnesses. p

FREDERICK J. BRADBERRY,

Witnesses: i

R. E. Conn, O. B. WALLACK. 

